diff --git a/doc/man1/cpchop.1 b/doc/man1/cpchop.1
index 3a7f995..2d992b1 100644
--- a/doc/man1/cpchop.1
+++ b/doc/man1/cpchop.1
@@ -1,4 +1,4 @@
-.TH CPCHOP "1" "October 2021" "cpchop 2021.10" "User Commands"
+.TH CPCHOP "1" "October 2023" "cpchop 2023.10" "User Commands"
 .SH NAME
 cpchop \- Upscale simple statistics
 .SH SYNOPSIS
diff --git a/doc/man1/cpchop_depthtrend.1 b/doc/man1/cpchop_depthtrend.1
index d03e75c..5773c62 100644
--- a/doc/man1/cpchop_depthtrend.1
+++ b/doc/man1/cpchop_depthtrend.1
@@ -1,4 +1,4 @@
-.TH CPCHOP_DEPTHTREND "1" "October 2021" "cpchop_depthtrend 2021.10" "User Commands"
+.TH CPCHOP_DEPTHTREND "1" "October 2023" "cpchop_depthtrend 2023.10" "User Commands"
 .SH NAME
 cpchop_depthtrend \- Upscale simple statistics
 .SH SYNOPSIS
diff --git a/doc/man1/cpregularize.1 b/doc/man1/cpregularize.1
index 5a2af53..609e5b4 100644
--- a/doc/man1/cpregularize.1
+++ b/doc/man1/cpregularize.1
@@ -1,4 +1,4 @@
-.TH CPREGULARIZE "1" "October 2021" "cpregularize 2021.10" "User Commands"
+.TH CPREGULARIZE "1" "October 2023" "cpregularize 2023.10" "User Commands"
 .SH NAME
 cpregularize \- Program to regularize cornerpoint grids
 .SH SYNOPSIS
diff --git a/doc/man1/exp_variogram.1 b/doc/man1/exp_variogram.1
index 73eadf9..efb4deb 100644
--- a/doc/man1/exp_variogram.1
+++ b/doc/man1/exp_variogram.1
@@ -1,4 +1,4 @@
-.TH EXP_VARIOGRAM "1" "October 2021" "exp_variogram 2021.10" "User Commands"
+.TH EXP_VARIOGRAM "1" "October 2023" "exp_variogram 2023.10" "User Commands"
 .SH NAME
 exp_variogram \- compute variogram for a cornerpoint grid with properties.
 .SH SYNOPSIS
diff --git a/doc/man1/grdecldips.1 b/doc/man1/grdecldips.1
index 1847451..e5338d2 100644
--- a/doc/man1/grdecldips.1
+++ b/doc/man1/grdecldips.1
@@ -1,4 +1,4 @@
-.TH GRDECLDIPS "1" "October 2021" "grdecldips 2021.10" "User Commands"
+.TH GRDECLDIPS "1" "October 2023" "grdecldips 2023.10" "User Commands"
 .SH NAME
 grdecldips \- Compute dip for cells
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_avg.1 b/doc/man1/upscale_avg.1
index 437f10c..efc22d2 100644
--- a/doc/man1/upscale_avg.1
+++ b/doc/man1/upscale_avg.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_AVG "1" "October 2021" "upscale_avg 2021.10" "User Commands"
+.TH UPSCALE_AVG "1" "October 2023" "upscale_avg 2023.10" "User Commands"
 .SH NAME
 upscale_avg \- Upscale using simple averages and report statistics
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_cap.1 b/doc/man1/upscale_cap.1
index a4f7d57..e5e66b1 100644
--- a/doc/man1/upscale_cap.1
+++ b/doc/man1/upscale_cap.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_CAP "1" "October 2021" "upscale_cap 2021.10" "User Commands"
+.TH UPSCALE_CAP "1" "October 2023" "upscale_cap 2023.10" "User Commands"
 .SH NAME
 upscale_cap \- Upscale capillary pressure and water saturation.
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_cond.1 b/doc/man1/upscale_cond.1
index 8fec2bf..b554f6d 100644
--- a/doc/man1/upscale_cond.1
+++ b/doc/man1/upscale_cond.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_COND "1" "October 2021" "upscale_cond 2021.10" "User Commands"
+.TH UPSCALE_COND "1" "October 2023" "upscale_cond 2023.10" "User Commands"
 .SH NAME
 upscale_cond \- Upscale electrical resistivity/conductivity
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_elasticity.1 b/doc/man1/upscale_elasticity.1
index a4ec820..8cb3dce 100644
--- a/doc/man1/upscale_elasticity.1
+++ b/doc/man1/upscale_elasticity.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_ELASTICITY "1" "October 2021" "upscale_elasticity 2021.10" "User Commands"
+.TH UPSCALE_ELASTICITY "1" "October 2023" "upscale_elasticity 2023.10" "User Commands"
 .SH NAME
 upscale_elasticity \- Upscale elastic parameters
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_perm.1 b/doc/man1/upscale_perm.1
index 41ee2ad..2fcb7ed 100644
--- a/doc/man1/upscale_perm.1
+++ b/doc/man1/upscale_perm.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_PERM "1" "October 2021" "upscale_perm 2021.10" "User Commands"
+.TH UPSCALE_PERM "1" "October 2023" "upscale_perm 2023.10" "User Commands"
 .SH NAME
 upscale_perm \- Upscale permeability
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_relperm.1 b/doc/man1/upscale_relperm.1
index 4468dbd..5835cd8 100644
--- a/doc/man1/upscale_relperm.1
+++ b/doc/man1/upscale_relperm.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_RELPERM "1" "October 2021" "upscale_relperm 2021.10" "User Commands"
+.TH UPSCALE_RELPERM "1" "October 2023" "upscale_relperm 2023.10" "User Commands"
 .SH NAME
 upscale_relperm \- Upscale two-phase relative permeability
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_relperm_benchmark.1 b/doc/man1/upscale_relperm_benchmark.1
index bebfcca..6a649cb 100644
--- a/doc/man1/upscale_relperm_benchmark.1
+++ b/doc/man1/upscale_relperm_benchmark.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_RELPERM_BENCHMARK "1" "October 2021" "upscale_relperm_benchmark 2021.10" "User Commands"
+.TH UPSCALE_RELPERM_BENCHMARK "1" "October 2023" "upscale_relperm_benchmark 2023.10" "User Commands"
 .SH NAME
 upscale_relperm_benchmark \- Benchmark version of upscale_relperm.
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_relpermvisc.1 b/doc/man1/upscale_relpermvisc.1
index c91adfd..4c5eb93 100644
--- a/doc/man1/upscale_relpermvisc.1
+++ b/doc/man1/upscale_relpermvisc.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_RELPERMVISC "1" "October 2021" "upscale_relpermvisc 2021.10" "User Commands"
+.TH UPSCALE_RELPERMVISC "1" "October 2023" "upscale_relpermvisc 2023.10" "User Commands"
 .SH NAME
 upscale_relpermvisc \- Upscale two-phase relative permeability
 .SH SYNOPSIS
diff --git a/doc/man1/upscale_steadystate_implicit.1 b/doc/man1/upscale_steadystate_implicit.1
index c6d91e0..c9bb4d0 100644
--- a/doc/man1/upscale_steadystate_implicit.1
+++ b/doc/man1/upscale_steadystate_implicit.1
@@ -1,4 +1,4 @@
-.TH UPSCALE_STEADYSTATE_IMPLICIT "1" "October 2021" "upscale_steadystate_implicit 2021.10" "User Commands"
+.TH UPSCALE_STEADYSTATE_IMPLICIT "1" "October 2023" "upscale_steadystate_implicit 2023.10" "User Commands"
 .SH NAME
 upscale_steadystate_implicit \- Upscale two-phase relative permeability
 .SH SYNOPSIS